On Thu, 3 Dec 2009, David Brownell wrote: > On Thursday 03 December 2009, Nicolas Pitre wrote: > > Semihosting enables code running on an ARM target to use the I/O > > facilities on the host computer. The target application must be linked > > against a library that forwards operation requests by using the SVC > > instruction that is trapped at the SWI vector by the debugger. The "hosted" > > Nit: it's now called the "Supervisor Call" vector; not "SWI vector". :)
Bah. I originally had "the SWI instruction" there. > > library version provided with CodeSourcery's Sourcery G++ Lite for ARM EABI > > is one example. > > I have arm-2009q1-203-arm-none-linux-gnueabi-i686-pc-linux-gnu.tar.bz2 ... > where is that library? Or do I need a different EABI package? Get arm-2009q1-161-arm-none-eabi-i686-pc-linux-gnu.tar.bz2 instead. The set of included libraries are completely different. Both may coexist. > > This is currently available for ARM9 processors, but any ARM variant should > > be able to support this with little additional work. > > Yeah, I seem to be poking at those parts of ARM11 and Cortex-A8... > > If possible, I'd like to see 0.4.0 ship with this expected to work > on all ARMs except maybe Cortex-M chips. (They aren't yet able > to plug into the "arm <subcommand> ..." infrastructure.) That should be trivial, especially with v2 of my patch. All that is needed is to set up a trap on the SVC vector. Either with a vector trap or a breakpoint. This is about the only thing that is ARM variant dependent. Nicolas _______________________________________________ Openocd-development mailing list Openocd-development@lists.berlios.de https://lists.berlios.de/mailman/listinfo/openocd-development
